Installing Unibios on a 4-slot MVS? Instructions?

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eastbayarb

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Do there exist somewhere some instructions on installing unibios on a 4-slot MVS board? Recommended materials needed? I searched on google and here and couldn't find them.
 
shadowkn55

shadowkn55

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The bios is socketed. Just pry it off with a flat head screwdriver and put the unibios in its place.
 
xiao_haozi

xiao_haozi

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slowly pry out old one with flat screwdriver or tool (work up each side a few mm at a time) then pull straight out.

Put the new one in and push straight down.... make sure the notch is aligned as shown on the board. (the instructions are also in the manual that you'll get with it or you can find on raz's site)

It's just a straight swap out.
 
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eastbayarb

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where do i download the unibios 3.0 image from and what kind of chip and programmer do i need? does there exist a diagram as to where the bios chip is on this board?

thanks!
 
xiao_haozi

xiao_haozi

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Dude... just buy it from raz http://unibios.free.fr/

Throw him the support for all his time and hard work.

And you'll see it... don't worry.

Before
dsc03245_sm.jpg


After
dsc03256_sm.jpg
 
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eastbayarb

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I wanted to try my hand in programming a chip and installing myself. I would buy one from the person mentioned, but he only accepts paypal (I don't have an account, nor do I want one - got ripped off recently, among other things) and cash (he isn't in the USA like I am).

so what kind of chip/programmer do I need?
 
shadowkn55

shadowkn55

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You can download unibios 2.3 from the same website if you want to go the free route. You'll need a 27c1024 eprom to burn it onto.
 
channelmaniac

channelmaniac

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I have EPROMs on my site if you don't have any...

27C1024-85 will be fast enough for what you want. Don't get a -120 or above as it may be too slow.
 
shadowkn55

shadowkn55

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channelmaniac said:
I have EPROMs on my site if you don't have any...

27C1024-85 will be fast enough for what you want. Don't get a -120 or above as it may be too slow.
Click to expand...

The speed on a 2-slot stock bios is -150. Does the 4 slot need a faster speed for some reason?
 
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